Crescent Nebula (NGC 6888) (pemag)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Crescent Nebula · NGC 6888

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Crescent Nebula (NGC 6888)

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Crescent Nebula (NGC 6888)

Capture Location: Athens, Greece.
Capture Dates: 15 September – 12 October , 2021.
Subframes: Ha 12*600s, Oiii 35*600s (Gain 139, -15°C).
Total integration time: 7h:50m (470 min).
Calibration frames: flats, darks, flat-darks.
Imaging Camera: ZWO ASI1600MM Pro.
Guide Camera: ZWO ASI224.
Guide Scope: Celestron Off Axis Guider.
Filter Wheel: ZWO Electronic 8-position Filter Wheel.
Filters: ZWO New -2018- Narrowband 1.25″, 7nm filters (only Ha and Oiii).
Reducer: Celestron Reducer / Corrector f/6.3.
Scope: Celestron SCT 9,25”.
Mount: Skywatcher EQ6-R PRO (German Equatorial).
Capture Software: N.I.N.A.
Auto-guiding Software: PHD2.
Planetarium: Stellarium.
Pre-processing:Pixinsight.
Post-processing: Pixinsight & Photoshop.
More Info: Photo processed with the HOΟ technique (Red=Ha, Synthetic Green=Oiii, Blue=Oiii).

ZWO ASI1600MM/QHY163M
Imaged with N.I.N.A.
Astrophotography in Greece
Imaged with APT

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Basic success
Started	...
Astrometry.net job	5416094
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Crescent Nebula (NGC 6888)

Crescent Nebula (NGC 6888)

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Image Index:

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Crescent Nebula (NGC 6888)

Crescent Nebula (NGC 6888)

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